Moistening cloth



March 21, 1933. E. WENZEL 1,902,429

MOISTENING' CLOTH Filed May 11, 1931 PatentedsMar. 21,193

UNITED STATES PATENT OFFICE. I

nun. wmrzm, or sun, enmmmr assrcnoa r nmrsr erssm nx'rmnensnnn scanner, or AUE, GERMANY, A conroaarren or cumin KOIS'IENIN G CLOTH Application filed Kay 11, 1931, Serial No. 536,824, and in Germany'J'une 2, 1830.

My invention relates to means for moistening cloths.

In order to improve the shrinking or the conditioning of cloths, more or less water is supplied to the cloth which thereu on is subjected to a drying process, the e ect of this treatment substantially depending upon the uniformity of moistening.

Now it is very difiicult to obtain, with the aid of the known methods and means, a uni form moistening, and to determine the degree of moisture, more particularly it is very dificult to adjust approximately correctly the degree of moisture in advance.

in order to overcome these dificulties, l

' sheet the moistening of cloths according to the invention by means of a device in which the moisture is sucked through the cloth,

a eriorated drum fitted with aporous liner being arranged opposite a suction nozzle, to which liner water is fed from the interior oi the drum by means of regulatable ressure. Each adjustment of the height or ead oi the pressure applied is corresponded to by the passage of a certain quantity of water which is delivered without any remainder to the cloth by means of the sucking action.

For instance, it witha height of pressure of 0.3 atmospheres, the water passage per minute amounts to 600 grams and 10 meters of cloth of 600 grams each pass between the nozzle and the porous liner, then as easily will be seen, the degree of moisture is 10%. For the adjustment of height of the pressure required in the individual case, any suitable pressure-controlling means may be provided in the water supply conduit, such as a reduction valve fitted with a reading-0d scale.

The cloth may more or less surround the drum or as between nozzle and drum in a straight 'ne.

In order that m invention may be more readily understood: an embodiment of the same is diagrammatically illustrated by way of example in the accompanying'drawing in which Fi in evice,

digure 2 is the corresponding side view, an

re 1 isan end viewof my new moisten- Figure 3 shows on an enlarged scale the porous drum and the suction nozzle.-

As will be seen from Figures 1 and 2 a chamber 5 is mounted on a frame 4 which chamber corresponds in length to the width of the cloth to be treated and is provided at the top with a longitudinal slot forming a suction nozzle So over which the cloth 6 is guided. Figure 1 shows the chamber 5 with nozzle 5a in cross section. The suction chamber 5 is connected by a conduit 7 to a vacuum pump 8 which is driven in any suitable manher. After the cloth has passed over the nozzle So it is uided in any suitablemanner by rotary cylinders 9 and 10. Above the nozzle 5a is disposed a perforated hollow drum 11 which may be mounted onswing arms 7 of the vacuum pump, while its other end is attached to-the reduction valve 16 of the pipe 17 for the water under pressure,

The cloth may be guided through the device as illustrated in Figure 1, so as to be in contact with the drum 11 only along a generatrix or element thereof, or the cloth may embrace the drum on a portion of its periphery, as illustrated in Figure 3 for which purpose the one respondingly.

I so determine theporosity of the liner 13 of drum 11 that the water penetrating from inside to outside must pass under a determined pressure whereby a determined degree of moistening of the cloth is assured,.

more particularly when the vacuum pump acts with a previously determined efliciency,

guide cylinder 9 is situated corwater un'ler pressure co'nnecteal :0 the interior of said cylindrical bady, & suction chamber extendin along saidi drum and haw ing a suction slot irected towards said &rum,

5 and means for passing the claizh 30 be treaiedl between sail drum and silct.

The foregomg specification signeti at Ber- 11in, Germany this28th day of Aprii, 1931. 

